I have a problem on the following system:
A domain Sharepoint Foundation 2010 server named srv-sharepoint
Any client machine on the same domain.
When I try to connect to http://srv-sharepoint in IE I make a request and get a response (fiddler):
HTTP/1.1 401 Unauthorized Server: Microsoft-IIS/7.5 SPRequestGuid: 350732e3-82e9-41ef-9c28-178eaaf504bb WWW-Authenticate: Negotiate WWW-Authenticate: NTLM X-Powered-By: ASP.NET MicrosoftSharePointTeamServices: 22.214.171.12462 Date: Fri, 03 Feb 2012 12:05:14 GMT Content-Length: 0 Proxy-Support: Session-Based-Authentication
When I connect using firefox, under the Web Developer Console there are 2 Get requests that receive a 401 Unauthorized And a subsequent Get request that gets a 302 Redirect to Home.aspx that works
IE's behaviour is not consistent; there are times that sharepoint authentification works on IE. Most of MS products (word, excel, onenote, sharepoint workspace) are not working also when connecting to sharepoint items.
Looking at raw request the major difference between IE and Firefox is that firefox contains the Request Header Authorization